What is the concept of isolating an application from the underlying operating system for testing purposes?

Question

Quizplus · Accepted Answer

Application virtualization is a software implementation that allows applications and programs to run in an isolated environment rather than directly interacting with the operating system. Sandboxing refers to segregating information or processes for security or testing purposes, but it's not directly related to isolation from the underlying operating system. Abstracting sounds similar to the correct term but is not pertinent to the question, and hosting is provided as an erroneous answer.

What Is the Concept of Isolating an Application from the Underlying